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This concept embraces those genera sometimes referred to Calothysanini
(e.g. Hausmann, 1993; Vives-Moreno, 1996), based on a misconception of the genus
Calothysanis Hübner. This is a junior synonym of Scopula Schrank
rather than a senior synonym of Timandra Duponchel. Timandrini would
anyway have priority over Calothysanini (See
Sterrhinae). Should the tribe
be combined with the Cosymbiini, then Timandrini has priority over
both Zonosomini and Cosymbiini (and indeed Cyclophorini if attributed to
Warren).
Typically (Timandra and Synegiodes Swinhoe) the male
antennae are strongly bipectinate, and the hind tibia bears no scent pencil or
other modified scaling. The oblique fasciation is often stronger on the
underside. The hindwing discal spot is white-centred as in other Sterrhinae.
In the male abdomen the second sternite is usually more strongly
sclerotised, but is not pouched or markedly setose. In the male genitalia the
valves are elongate, sometimes cleft and highly complex. The uncus is flanked by
broad socii, massive in Synegiodes.
The female genitalia have a distinctive signum in the generally rugose
bursa, consisting of a triangular pouch directed distally, with a longitudinal
ridge running from the apex. Within the pouch the rugosity is more intense. A
similar structure occurs in Cosymbiini (Cyclophora Hübner) and in the
Rhodometrini (See Sterrhinae). The ovipositor lobes are densely granulose amongst the
setae.
Synegiodes can definitely be assigned to the tribe, but the inclusion of Traminda
is only tentative. There are some similarities in facies and in larval
features, and lack of a pupal girdle precludes inclusion in the Cosymbiini.
However, the genus lacks all the specific features of the genitalia mentioned
above and has several peculiarities of its own: the elongation of the central
bulge of the tympanic ansa may indicate affinity with the Rhodometrini (See
Sterrhinae).
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